Showing posts with label research. Show all posts
Showing posts with label research. Show all posts

Tuesday, January 11, 2011

Layer 418 . . . Music, Pleasure, Dopamine, Neuroscience, Health, Wellbeing, Frissons, Chills, Satori and Other Wonders of the Human Brain

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Why blog about music? Why do so many people consider music to be an important, even a crucial part of their lives? Why do so many people have no time, no need, and no regard for music? Are these people soulless, or just made differently? Different to what?

Looking back, I can remember my first record player, my first LPs, my first 45s, my first live music bop at the local youth club, my first pub gigs, my first discos (dancing to Tamla Motown, Stax and Atlantic), my first live encounters with bands who'd had hit records, my first college gigs, my first festivals, and so on. Not only do I remember these things, I have intense memories of the pleasure these things gave me. Even now I can listen to early Dylan, Stones, Beatles, Fleetwood Mac, Pink Floyd, etc, with the same pleasure as I listened with way back then.

I can remember nights in Africa, camped under the stars of a pitch-black night, listening to music. I can remember driving for endless miles through bush and rain forest with the volume on the hi-fi cranked right up to maximum for favourite tunes.

These days it's still a huge pleasure to wander through Spotify, finding new music, new bands, new solo artists.

This week we hear news of research which shows a chemical link between music and wellbeing:

Music 'releases mood-enhancing chemical in the brain'
By Sonya McGilchrist Health reporter, BBC News

http://www.bbc.co.uk/news/health-12135590

Music releases a chemical in the brain that has a key role in setting good moods, a study has suggested.

The study, reported in Nature Neuroscience, found that the chemical was released at moments of peak enjoyment.

Researchers from McGill University in Montreal said it was the first time that the chemical - called dopamine - had been tested in response to music.

Dopamine increases in response to other stimuli such as food and money.

It is known to produce a feel-good state in response to certain tangible stimulants - from eating sweets to taking cocaine.

Dopamine is also associated with less tangible stimuli - such as being in love.

In this study, levels of dopamine were found to be up to 9% higher when volunteers were listening to music they enjoyed.

The report authors say it's significant in proving that humans obtain pleasure from music - an abstract reward - that is comparable with the pleasure obtained from more basic biological stimuli.

Music psychologist, Dr Vicky Williamson from Goldsmiths College, University of London welcomed the paper. She said the research didn't answer why music was so important to humans - but proved that it was.

"This paper shows that music is inextricably linked with our deepest reward systems."

Musical 'frisson'
The study involved scanning the brains of eight volunteers over three sessions, using two different types of scan.

The relatively small sample had been narrowed down from an initial group of 217 people.

This was because the participants had to experience "chills" consistently, to the same piece of music, without diminishing on multiple listening or in different environments.

A type of nuclear medicine imaging called a PET scan was used for two sessions. For one session, volunteers listened to music that they highly enjoyed and during the other, they listened to music that they were neutral about.

In the third session the music alternated between enjoyed and neutral, while a functional magnetic resonance imaging, or fMRI scan was made.

Data gathered from the two different types of scans was then analysed and researchers were able to estimate dopamine release.

Dopamine transmission was higher when the participants were listening to music they enjoyed.

Consistent chills
A key element of the study was to measure the release of dopamine, when the participants were feeling their highest emotional response to the music.

To achieve this, researchers marked when participants felt a shiver down the spine of the sort that many people feel in response to a favourite piece of music.

This "chill" or "musical frisson" pinpointed when the volunteers were feeling maxim pleasure.

The scans showed increased endogenous dopamine transmission when the participants felt a "chill". Conversely, when they were listening to music which did not produce a "chill", less dopamine was released.

What is dopamine?
Dopamine is a common neurotransmitter in the brain. It is released in response to rewarding human activity and is linked to reinforcement and motivation - these include activities that are biologically significant such as eating and sex.

Dr Robert Zatorre said: "We needed to be sure that we could find people who experienced chills very consistently and reliably.

"That is because once we put them in the scanner, if they did not get chills then we would have nothing to measure.

"The other factor that was important is that we wanted to eliminate any potential confound from verbal associations, so we used only instrumental music.

"This also eliminated many of the original sample of people because the music they brought in that gave them chills had lyrics."

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From the Montreal Gazette:
http://www.montrealgazette.com/health/Music+produces+natural+high+McGill+study+finds/4084087/story.html

Music triggers the same pleasure-reward system in the brain as food, sex and illicit drugs, according to McGill University researchers who have been peering into minds of music lovers.

They've discovered the feel-good neurotransmitter dopamine is released when people listen to their favourite music, be it rock, jazz or classical.

The finding by the team at McGill, reported yesterday in the journal Nature Neuroscience, helps explain why music is so pleasurable and popular.

It also hints at why music has been so valued and important throughout human history and across cultures, says neuroscientist Robert Zatorre, who leads the McGill team at the Montreal Neurological Institute.

"Music has such deep roots in the brain that it engages this biologically ancient system," says Zatorre, explaining how dopamine generates the sensation of pleasure in the striatum, a primitive region deep in the brain.

It's long been known dopamine is produced and generates pleasure when we eat or have sex, reinforcing activities that are key to survival. The Montreal study provides the first evidence that dopamine is also responsible for musical highs.

"For reasons that we don't entirely understand, somehow music was able to kick in with the same system," Zatorre says. "And that gives it power that it might not otherwise have."

While music may not be key to survival, he says it has been "very" useful.

"Because it gives us pleasure, we can use it to our advantage to modulate our state of mind."

Heroin and cocaine hijack the dopamine system, which is what makes the illicit drugs so addictive. But Zatorre sees little danger in listening to too much music.

"If you are hooked on music, it won't cause you to waste away, it won't give you health problems," he says. "On the contrary, it probably enhances your health."

For the study, he and his colleagues put out a call for people who get the chills, a sign of intense nervous-system arousal, when listening to music. Of the more than 200 individuals who volunteered, 10 people were eventually selected to undergo the brain scans that cost a few thousand dollars each.

One key stipulation was that the volunteers' favourite music not have lyrics. "We wanted to be sure the response was due to the music, not the words that accompanied it," Zatorre says.

The volunteers agreed to undergo brain scans while listening to tunes they picked, which ranged from techno to folk to classical.

Two types of brain scans were done as the volunteers blissed out to music inside the medical machines. Positron emission tomography (PET) revealed if and where dopamine was being released. For these scans, the volunteers were injected with a short-lived and harmless radioactive molecule, carbon-11, that latched onto any dopamine produced and showed up on the PET scans.

Magnetic resonance imaging (MRI), which detects how much oxygen brain cells are using, revealed which areas of the brain were stimulated as the pleasure associated with the music kicked in. "It tells us where the brain is active and it tells us, within a range of a couple of seconds or so, when it is active," Zatorre says.

As the volunteers listened to music that "really turned them on," the sensors and scanners picked up clear signs of pleasure. Chills ran up their spines and their heart rates climbed as dopamine was released deep inside the brain. The volunteers also underwent scans listening to music they are indifferent to, which produced no pleasure effect.

The music that generated dopamine release depended on the listeners' tastes and preferences.

"All types of music activated the same part of the brain," Zatorre says. "It doesn't matter if it's punk, classical, tango or even bagpipes."

While the study volunteers experienced the chills when most roused by music, he says the scans revealed dopamine was also released even when the pleasure was not as intense.

The scans also showed that dopamine is released in advance of key sections and sequences in music, enhancing and prolonging the pleasure, which Zatorre considers one of the most interesting findings: "Ten to 20 seconds prior to the maximum pleasure, there was a different dopamine response in a slightly different place in the brain."

He says this "anticipation response" helps explain why musicians often build tension and pauses into their pieces. "They have a kind of intuitive understanding of the neuro-mechanisms behind pleasure," Zatorre says.

He says understanding the biochemical orchestra at work in the "magic of music" makes him appreciate it even more.

Read more: http://www.montrealgazette.com/health/Music+produces+natural+high+McGill+study+finds/4084087/story.html#ixzz1Aiyq00X7

http://news.yahoo.com/s/ap/20110109/ap_on_sc/us_sci_music_on_the_brain
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Wednesday, June 2, 2010

Layer 323 . . . Italy, Dartington College, Deficit Hawks, Tony Benn, Statistics, the Coalition, Media Cynicism, Gaza and the Flotilla

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Solidarity Needed

Things in Italy are so bad that journalist and researcher Benedetta Brevini felt the need to publish this plea for Europe-wide help:

http://www.guardian.co.uk/commentisfree/libertycentral/2010/may/31/europe-must-protect-italy-freedom-speech

"Unpopular ideas can be silenced and inconvenient facts kept dark, without the need for any official ban," wrote George Orwell in his preface to Animal Farm in 1943. And I thought the Italian prime minister, Silvio Berlusconi, had a tight enough grip on public opinion without the need for any "official ban".

Berlusconi controls roughly 80% of Italian free-to-air television channels, in a country where just 20% of the population reads newspapers. Did he really need to impose any further constraint on freedom of speech? A draft law that is going to be approved by the parliament in the following weeks will gag the last few, daring news outlets that exert oversight on the government.

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http://www.guardian.co.uk/commentisfree/cifamerica/2010/may/31/deficit-hawks-social-security-wall-street

Why should we listen to deficit hawks?

Calls to cut social security come from economists who want to line Wall Street pockets with money from ordinary workers

by Dean Baker

If the market had been allowed to run its course Goldman, Citigroup, Morgan Stanley, and many other major banks would have been bankrupt, leaving their shareholders and creditors out of luck and their top executives walking the unemployment lines. There are reasons that this outcome would have been undesirable for the economy as a whole, but there is a big difference between the Tarp blank check and doing nothing. If the politicians and their accomplices in the economics profession had not overwhelmed the public with fear, we could have ensured that the bankers suffered from the crisis that they had themselves created.

With the banks back on their feet, the Wall Street crew and their accomplices in the economics profession are again feeling their oats. They are insisting that we have to put our hopes for economic recovery on the back burner. Instead, we have to focus on deficit reduction. The reason is that we have to soothe financial markets.

The claim is that if we don't act aggressively now to reduce the budget deficit then the "bond vigilantes" will start a run on US debt just as they have recently done with Greece. This is supposed to make us so scared that we will accept large cuts in social security and in other important programmes.

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The third reason not to take the deficit hawks argument seriously is simply that it is bad economics. The country needs deficit spending to sustain demand until private demand recovers from the collapse of the housing bubble. This is basic logic – and the prestigious positions of many of the deficit hawks will not allow them to repeal the rules of logic.

The deficit hawks are not concerned about national insolvency; they are not worried about soaring inflation; they are worried about how to take every last penny from ordinary workers and give it to the Wall Street crew. That is what the Tarp was about and this is what the latest crusade to reduce the deficit is all about. Now they want to go after workers' social security because, as Federal Reserve Board chairman Ben Bernanke said: "That is where the money is." The fact that workers have paid for these benefits doesn't matter at all to the Wall Street crew.

So, if you feel like giving all your money to the Wall Street gang, then you should take the deficit hawks seriously. But, if you think that people who are not Wall Street millionaires have rights too, then get out the pitchforks and send the deficit hawks and their economist accomplices running.

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Letters to my Grandchildren - Tony Benn on Midweek - R4

http://www.amazon.co.uk/Letters-My-Grandchildren-Tony-Benn/dp/0091931266

TB spoke well, as ever, about still being an idealist at the age of 85.

He talked about 2 flames that still burn brightly - Hope, & Anger against injustice.

http://en.wikipedia.org/wiki/Tony_Benn

As a diarist I have chronicled the time through which I have lived in meticulous detail: but all that is history. What matters now is the future for those who will live through it. The past is the past but there may be lessons to be learned which could help the next generation to avoid mistakes their parents and grandparents made. Certainly at my age I have learned an enormous amount from the study of history - not so much from the political leaders of the time but from those who struggled for justice . . .

Every generation has to fight the same battles as their ancestors had to fight, again and again, for there is no final victory and no final defeat. Two flames have burned from the beginning of time - the flame of anger against injustice and the flame of hope. If this book serves its purpose it will fan both flames.

http://thecollectivereview.com/dan-jude/interview-tony-benn.html

http://www.tony-benn.net/

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Dartington College of Arts

http://www.guardian.co.uk/education/2010/jun/01/dartington-college-arts-relocation-falmouth

 A threat to its identity?

Will Dartington College's quirky character survive its move to the metropolis of Falmouth?


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Peter Mortimore
used to be a number-cruncher and some sort of  researcher in the last days of the ILEA - as head of its research and statistics department. Figures and data are his big thing.

Educational research 'speaks the truth to power' and ministers must listen if their policies are to be effective


http://www.guardian.co.uk/education/2010/jun/01/education-research-sound-policy-base

In this crappy little article in this week's education section he states the bleeding obvious about politicians but fails to draw any decent conclusions about the uselessness of academia in general.

Politicians' speeches are peppered with references to research and evidence-based policy. Less often discussed are the details of who commissioned and paid for the research and whether findings have been subjected to peer-review.

It is timely, therefore, that a report, Instinct or Reason: How Education Policy is Made and How we Might Make it Better, has been produced by the CfBT (Centre for British Teachers) Education Trust. It concludes that, since the 1970s, much education policy has been influenced less by the strength of evidence, than by political ideology, prime ministerial likes and dislikes and the views of political advisers.

Based on interviews with, and the memoirs of, former ministers and meetings with civil servants, thinktank policy wonks, academics, and trade union officials, the report explores both the overt and covert reasons for many of the initiatives and frequent changes of policy in education over the last 40 years.

The authors argue that the media, ideology, particularly the belief in the efficacy of the market, and an increasing awareness of international comparison data – have a disproportionate influence on decisions. They suggest this influence has been considerably more powerful than that of academic researchers, who have often been viewed with suspicion. They make the point that, the longer they have been in power, the more governments feel able to disregard evidence.

Well, Pete me old mate, I think we all have good reasons to pay not much attention to academics. Take a look at your inanely grinning photo at the top of your column, for instance. "Why are politicians suspicious of academics?" It's not just the politicians, matey.

Peter says, "Good policymaking needs a sound research base." I think it needs a lot more than that, unless we're just talking about anticipating birth rates, the need for school places, etc.

The only research worth having in education is what people like those from CLPE, for example, do collaboratively by way of action research with practicing teachers. This has nothing to do with number-crunching and is based on painstaking observation of classroom practice, and an understanding of teaching and learning, the needs of children, and clear objectives for educating all of the intelligences. Academics tend not to know about this stuff, any more than politicians do.

Mortimore has no experience or in-depth understanding whatsoever of the difficulties and challenges of running a good school. Fact.

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Jenni Russell wrote a good column this week:

The coalition deserves better than the media's infantilising cynicism

Instead of clear appraisal, the coalition faces the ritual negativity that is an utterly destructive part of our collective life

http://www.guardian.co.uk/commentisfree/2010/jun/01/coalition-media-cynicism-david-laws

David Cameron and Nick Clegg have been mocked for their talk of the new politics. But the media have been remarkably dense about recognising that this politics really is different from the adversarial, two-party system we have grown accustomed to.

This grudging, myopic approach is bad for all of us. It infantilises and depresses us. It means that the new government isn't getting the credit it should for its sense of energy and purpose, and its many good decisions; taking more of the low-paid out of tax, rolling back the database state, cancelling the third runway, and giving us much more information about how public money is spent. Nor, more importantly, is it getting a constructive engagement from its critics on how to make all the tough decisions, on welfare, revenue and cuts.

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David Grossman, an Israeli writer, published this superb column, translated for the Guardian today. It deserves to be read in full by anyone who gives a shit about the violence, the loss of life, and the stalemate in the Middle East.

http://www.guardian.co.uk/commentisfree/2010/jun/01/gaza-flotilla-attack-isral-declined

The Gaza flotilla attack shows how far Israel has declined

No explanation can justify or whitewash the crime that was committed, and no excuse can explain away the stupid actions of the government and the army. Israel did not send its soldiers to kill civilians in cold blood; this is the last thing it wanted. Yet, a small Turkish organisation, fanatical in its religious views and radically hostile to Israel, recruited to its cause several hundred seekers of peace and justice, and managed to lure Israel into a trap, because it knew how Israel would react, knew how Israel is destined and compelled, like a puppet on a string, to react the way it did.

Israel's actions are but the natural continuation of the shameful, ongoing closure of Gaza, which in turn is the perpetuation of the heavy-handed and condescending approach of the Israeli government, which is prepared to embitter the lives of a million and a half innocent people in the Gaza Strip, in order to obtain the release of one imprisoned soldier, precious and beloved though he may be; and this closure is the all-too-natural consequence of a clumsy and calcified policy, which again and again resorts by default to the use of massive and exaggerated force, at every decisive juncture, where wisdom and sensitivity and creative thinking are called for instead.

Somehow, all these calamities – including Monday's deadly events – seem to be part of a larger corruptive process afflicting Israel. One has the sense that a sullied and bloated political system, fearfully aware of the steaming mess produced over the years by its own actions and malfunctions, and despairing of the possibility to undo the endless tangle it has wrought, becomes ever more inflexible in the face of pressing and complicated challenges, losing in the process the qualities that once typified Israel and its leadership – freshness, originality, creativity.

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These pieces, by Amos Oz, an Israeli novelist and founder of the Peace Now movement, and by Lauren Booth, are also worth a read:

http://www.guardian.co.uk/commentisfree/2010/jun/02/israel-force-impotent-hamas-idea

http://www.guardian.co.uk/commentisfree/2010/jun/02/palestinian-territories-gaza
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